#自定义公共代码

#自定义过滤器

from flask import session,g,current_app
from functools import wraps

def index_class(index):
    if index ==1 :
        return  'first'
    elif index == 2 :
        return 'second'
    elif index == 3:
        return 'third'
    else:
        return ''


#使用装饰器封装用户登录数据
def user_login_data(view_func):
    @wraps(view_func)
    def wrapper(*args,**kwargs):
        # 获取用户的编号,从session
        user_id = session.get("user_id")

        # 判断用户是否存在
        user = None
        if user_id:
            try:
                from info.models import User
                user = User.query.get(user_id)
            except Exception as e:
                current_app.logger.error(e)


        g.user = user

        return  view_func(*args,**kwargs)

    return wrapper